Nominal Electric Resistance per Unit Length
This test is used to calculate the nominal resistance per length based on the resistivity and cross-sectional area of the round wire sample. Read more
Archives
Outer Conductor Integrity
The outer conductor integrity test is designed to evaluate the ability of an outer conductor material to withstand heat exposure and subsequent soldering. Samples are placed into an oven at the specified temperature for no less than 1 hour and 30 minutes. After the heat exposure, samples are maintained at room temperature for no less […] Read more
Jacket Color
Insulation color is often used to identify a wire or cable’s system or function(s). The jacket color test evaluates the characteristics of an insulative jacket’s color as compared to the limitations specified in the applicable standard. This testing procedure applies the Munsell Notation of color categorization in which colors are defined by hue, value, and […] Read more
Heat Distortion
The heat distortion test evaluates the ability of an insulator or jacket to maintain its physical structure without deformation under elevated temperature conditions. Distortion of the insulation or outer jacket can create an uneven insulative surface on a conductor; areas with reduced insulation coverage are more susceptible to damage. Distortion also increases the possibility for […] Read more
Flexibility
The flexibility of a wire/cable is dependent on a combination of the conductor and insulation constructions. Wire/ cable constructions with more conductor strands are often better able to endure flexing without breaking whereas more rigid constructions are more likely to crack or break over periods of excess mechanical stress. The flexibility of a wire or […] Read more
Flex Life at Crimp Termination
This test evaluates the ability of a terminated wire sample to maintain its structural integrity under conditions of repeated stress at the point of termination. The location of a crimp termination on a wire is more likely to experience conditions of mechanical stress than other locations along the length of the wire. It is crucial […] Read more
Phase Constant
A phase constant is a physical property of a propagating sine wave representing the shift in phase the wave experiences while travelling along its path. This test measures the phase constant of a twisted pair cable as a value of radians per length. Lectromec uses a spectrum analyzer to make all relevant measurements in determining […] Read more
Phase Delay
Phase delay is a measure of the delay in time a signal is emitted and when it is received at the other end. It is important that signal carrying cable adhere to a minimum phase delay to ensure timely and accurate function of the relevant system(s). The phase delay (propagation delay) is calculated from the […] Read more
Shield Coverage
Shield coverage is determined by a mathematical formula as defined in AS85485 dependent on the physical properties of the cable shield. Read more
VSWR/ Return Loss
Return Loss is a relative measurement of the reflected signal on a cable. In an ideal system, no signal would be reflected, all of the power on a signal would be received by the load, and the return loss would be infinite. In real-life applications, there will always be at least some amount of the […] Read more